#00153C
Closest named color: Navy Blue (#001146). oklch(20.8% 0.081 259.1), rgb(0, 21, 60).
Aa
White text reads best on this color (17.91:1).
About this color
#00153C is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.081 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.022 away. White text reads best on it, at 17.91:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.91:1 |
Values
| HEX | #00153C |
| RGB | rgb(0, 21, 60) |
| HSL | hsl(219, 100%, 12%) |
| OKLCH | oklch(20.8% 0.081 259.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #00153C | 17.91:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #00153C | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #00153C text on white | 17.91:1 | AAA | Lc 104.3 | Preferred for body text |
| #00153C text on black | 1.17:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFD
oklch(88.5% 0.053 258)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400
#63A0FF
oklch(70.7% 0.154 259)
-
Step 500
500
#3584FD
oklch(63% 0.196 259.1)
-
Step 600
600
#056AED
oklch(55.7% 0.214 259.1)
-
Step 700
700
#0058CA
oklch(49.1% 0.191 259.1)
-
Step 800
800
#0248A6
oklch(42.6% 0.164 259.1)
-
Step 900
900
#0F3E84
oklch(37.8% 0.128 259)
-
Step 950
950 (this color)
#00153C
oklch(20.8% 0.081 259.1)
#00153C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #001A3D | 0.016 |
| Deuteranopia (no green cones) | #00143B | 0.004 |
| Tritanopia (no blue cones) | #001F25 | 0.062 |
| Achromatopsia (no color) | #171717 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00153C
#00153C
oklch(20.8% 0.081 259.1)
- #221500
#221500
oklch(20.8% 0.043 79.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #00153C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.022
- Night Blue #040348 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.047
- Dark Navy #000435 ΔE 0.051
- Very Dark Blue #000133 ΔE 0.063
- Dark Navy Blue #00022E ΔE 0.066
- Dark Indigo #1F0954 ΔE 0.069
- Midnight #03012D ΔE 0.069
Use #00153C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.